“The emergence of novel pathogens poses a major public health threat causing widespread epidemics in susceptible populations.” This is the opening theme proposed by researchers who studied a deadly form of E. coli in hopes that it would prevent another public health outbreak in the future.

Pseudomonas aeruginosa is a common bacterium that can cause disease in animals and humans. It can be found in soil, water, skin flora, and most man-made environments throughout the world. It thrives in normal or hypoxic atmospheres; due to this it has colonized many natural and artificial environments. It can infect animals with damaged tissue or people with reduced immunity.
Symptoms are generalized inflammation and sepsis. It can be fatal if colonization occurs in critical body organs,...

A pivoted catch designed to fall into a notch on a ratchet wheel so as to allow movement in only one direction (e.g. on a windlass or in a clock mechanism), or alternatively to move the wheel in one direction.